Hello,
I just went through your project details, and I am sure I can deliver exactly what you want in a week time only if you'd give me a chance to discuss further with you on this project.
Relevant Skills and Experience
I have over 5years of working experience and skilled at HTML 5, CSS 3, Javascript, Python, PHP and C# which are strong technologies for secured web and software development
Proposed Milestones
$150 USD - Web design and development
$50 USD - SSL security certificate
Additional Services Offered
$50 USD - 1 month support
What exactly do you mean by gateway payment integration, as I am not sure BitCoin has a gateway ?